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A challenge for concrete technology?

Reduction of CO₂ emissions by means of calcined clays

Calcined clays offer the opportunity to fulfil environmental requirements, to counteract the shortage of resources and to provide the market with high-performance binders, in synergy with other composite materials. Clays, which are of future interest, hardly release any carbon dioxide during the thermal activation (calcination) due to their chemo-mineralogical composition. Investigations on the availability of clay deposits [1] reveal a sufficient number of quarries in Germany. A selective calcination process in technical facilities is urgently required for a pozzolanic contribution of the...

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